package com.yun.reggie.common;


import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;

/**
 *自定义元数据对象处理器，用来处理各个实体类对象统一字段的自动填充
 */
@Component
@Slf4j
class MyMetaObjectHandler implements MetaObjectHandler {
    /**
     * 插入操作自动填充
     * @param metaObject
     */
    @Override
    public void insertFill(MetaObject metaObject) {
        log.info(metaObject.toString());
        //意思是，插入注解所标记的字段时，给下面四个属性赋值
        metaObject.setValue("createTime", LocalDateTime.now());
        metaObject.setValue("updateTime", LocalDateTime.now());
        metaObject.setValue("createUser",BaseContext.getCurrentId());
        metaObject.setValue("updateUser",BaseContext.getCurrentId());
    }

    /**
     * 更新操作自动填充
     * @param metaObject
     */
    @Override
    public void updateFill(MetaObject metaObject) {
        log.info(metaObject.toString());
        metaObject.setValue("updateTime", LocalDateTime.now());
        metaObject.setValue("updateUser",BaseContext.getCurrentId());
        //long id = Thread.currentThread().getId();
        //log.info("元数据对象处理器中的线程id是：{}",id);
    }
}